How do I adjust (offset) colorbar title in matplotlib

Question

Given the following code:

imshow(np.arange(16*16).reshape(16,16))
cb = colorbar()
cb.set_label(\"Foo\")
cb.set_ticks([0,255])

Which produces:

Answer 1

cb.set_label("Foo", labelpad=-1)

Negative labelpad values will move closer to the bar, positive away.